Mowing-machine.



C. PEARSON..

MowrNG MAcHlNE.

vAPPLICATION FILED DEC. 22| ISIS.

1,237,6901. 1 Patented Aug. 21, 1917;

` 2 SHEETS-SHEET l.

556? l?. Fm

C. PEARSON.

MOWING MACHINE.

APPLICATION F|LED,oEc.22. 191.3.

1,237,690, PatentedAug. 21,191?n 2 SHEETS-SHEEZ.

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narra s' arnrr cierren CHARLES PERSN, OE CHICAGO, ILLINOIS, ASSGNCR'TOINTERNATIONAL HARVESTER COMPANY OF NEW JERSEY, A CORPORATION OF NEWJERSEY.

ivrowING-MACHINE.

Specification of Letters atent.

Patented Auw. 21, 1917.

To aZZcULQr/t it may concern'.-

Be it known that I, CHARMES PEAnsoN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented' certain new and useful Improvements in MowingNIachines, ofwhich the foil-owing is a full, clear, and exact specification.

My invention relates to mowing machines.

It .has among its objects to operatively connect the finger bar -to thecoupling frame and mower in an improved mannervwhereby', upon tilting ofthe bar, a constant lead upon the saine may be maintained'. A furtherobject of my invention is to `provide improved" means whereby the lead'ofthe finger bar and the register of the knives maybemaintainedl oradjusted as desired. A further object of my invention is to provide animproved*coupling frame of rigid and sturdy construction which at thesame time is readily adjusted and serves' to effectually protect theoperating parts of the-mower, andv especially the pitman and crankwheel, certain parts oil the coupling frame being readily removablevwhen desired to permit removal of the crank shaft. The se and otheradvan-v tages of my improvement will be hereinafter described. y

In this application, which is a continuation'of my copendi-ngapplication, Serial No. 728,109, filed? Getober 2S, 1912, I have, forpurposes'of illustration shown in the accom panying drawings oneembodiment which my invention may assume in' practice.

In these drawings Figure 1 isa 'topplan view of a mowing machine havingmy invention embodied in its construction;

` Fig. 2 is a side elevation of Fig. 1;

Fig. 3 is a detached; detail of part of the coupling frame mechanism,partly'in section; and

Fig. 4 is a cross section of the grassward end wof the main couplingbar.

Referring to the drawings, wherein the same reference numerals designatelike parts throughout the several views, 1 represents the main frame, 2a driving'axl'e journaled therein, wheels journaled upon opposite endsof said axle, 4 al forwardly ,extending frame member, in whichis'journaled a crank shaft having a crank w'heelv 5 secured to'its frontend, the member 4 terminatingr in a bowls'haped' shield 6 partiallysurrounding the crank wheel and having its front side closed by aplatemember 7,' that is pivotally connected with thebowl by means of abolt 8,y and 9 represents a draft tongue secured to the wheel frame. 10represents a coupling vbar having its stubbleward end pivota'llyconnected with the frame member 4 near its rear end. This bar inclinesforward and grassward and terminates in' a part 11 disposed at rightangles with the l'ine of draft of the machine substantially parallel;with the ground. As shown it has mounted thereon rocking coupling yoke12, including a sleeve member 13 and depending arms 14, to which ispivotally connectedy the inner shoe 15 of the cutting mechanism. 16represents a finger bar secured to the shoe, and 17 the knifeoperatively connected with the crank wheel 5 by ymeans of a pitman 18.19 represents a supplemental coupling frame member disposed' in front ofthe pitman 18 as a guard, and disposed parallel witlr'the part 11 of themember 10, having its grass ward end turned laterally and pivotallycon"- necting th'e couplingyoke, and its opposite end threaded andadjustably received by a threaded sleeve 20v integral with the pivotedplate member 7.y The part 11 of the cou'- pling bar 10`is threaded in anopposite direction to that ofthe member 19 and the sleeve member 13= isthreaded to receive it.v

With my improved construction, having the main and supplementalcoupling' bars threaded oppositely, or the main: lo'ar threadedright-hand and the supplemental bar threaded left-hand, vin' operation,when the coupling yoke is rocked about the bar, will move inward oroutward as a nut, and the supplemental bar turning in the sleeve 20 willmove inward or outward in a manner to compensate for a longitudinalmovement ofthe coupling yoke and maintain a proper lead or alinement ofthe guard fingers and knives and proper registration of the latter. Bythis compensating adjustment therefore, the knives will always registerwith the guard fingers at the saine point in the stroke of the cutterbar and this registrationl will be maintained constant when'the fingerbar and cutter bar are tilted. It is further to be noted that byrotating the yoke about ythe coupling' frame, the position of the cutterbar may be adjusted as desired in order to adjusti the registrationr ofthe knife with respect to the guardi, the frontv threaded bar andtilting mechanism being at that time disconnected in such a manner as tolet the shoe turn on the threaded end of the coupling bar.

Obviously, by suitable adjustment of either' of the adjustableconnections, the lead of the bar 16 may also be adjusted if desired.Attention is here also directed to the fact that by the use of thesupplemental coupling frame member 19 the yoke is securely braced uponthe main frame and the pitman 18 is protected from breakage due tostriking obstructions in the field. By the provision of thissupplemental coupling frame-member it is also possible to close the endof the bowl 6 and protect effectually the crank wheel 5, at the sametime that a cover may be provided which will not hammer and break whenthe mower is passing over roughground. Obviously also this protectingmeans does not interfere with the removal of the crank and crank shaftfrom the frame 4, the same being .readily withdrawn when desired aftersimply releasing the bolt S. It should here also be noted that by theprovision of my improved coupling frame, I am enabled to use a yokecarrying member disposed substantially parallel to the ground andrelatively high therefrom in such a manner as to enable increasedclearance when passing over obstructions or rough ground.

I/ihile I have in this application described but one form which myinvention may assume in practice, it is, of course, to be understoodthat this form is shown for purposes of illustration and may be modifiedwithout departing from the spirit of my invention.

`What I claim as my invention, and desire to secure by Letters Patent,is:

1. In a mowing machine, a frame, a finger bar pivoted thereon, means fortilting said finger bar, and means for maintaining a constant lead onsaid bar during the tilting operation. v

2. In a mowing machine, a frame, a finger bar pivoted thereon, guardfingers carried by said finger bar, a cutter bar movable in said fingerbar, knives carried by said cutterl bar, means for tilting said fingerbar and said cutter bar, and means for maintaining a constant registerof said knives with respect to said guard fingers during the tiltingoperation. j

3. In a mowing machine, a frame, a finger bar pivoted thereon, guardfingers carried by said finger bar, a cutter bar movable in said fingerbar, knives carried by said cutter bar, means for tilting said fingerbar and said cutter bar, and means for maintaining a constant lead onsaid bars and a constant register of said knives with respect to saidguard lingers during the tiitingoperation.

1. In a mowing machine, a main frame,

,65 a coupling bar carried thereby having a threaded grassward enddisposed at right angles to the line of draft, and a yoke threaded onsaid end and adjusted longitudinally thereon as said yoke is tilted onsaid coupling bar.

5. In a mowing machine, a coupling frame, a yoke threaded thereon, afinger bar pivoted on said yoke, means for tilting said yoke, and meansfor maintaining a constant lead on said bar during thetilting operation.

6. In a mowing machine, a coupling frame, a yoke threaded thereon, alinger bar pivoted on said yoke, guard fingers carried by said fingerbar, a cutter bar movable in said finger bar, knives carried by saidcutter bar, means for tilting said yoke, and means for maintaining aconstant register ofy said knives with respect to said guard fingersduring the tilting operation.

' 7. In a mowing machine, a coupling frame, a yoke threaded thereon, afinger bar pivoted on said yoke, guard fingers carried by said lingerbar, a cutter bar movable in saidiinger bar, knives carried by saidcutter bar, means for tilting said yoke, and means for maintaining aconstant lead on said'bars I and a constant register of said knives withrespect to said guard fingers during the tiltlng operation. f

8. In a mowing machine, a machine.

frame, a rising and falling coupling bar pivotally connected theretohaving a transversely disposed grassward portion, a yoke carried on saidportion, means whereby said yoke may be adjusted bodily lengthwisethereof, and coperating means connecting said yoke and framesimultaneously adjustable with said yoke. y

9. In a mowing machine, a machine frame, a rising and falling couplingbar pivotally connected thereto havinga transversely disposed grasswardend, a rotatable yoke adjustable longitudinally of said end, and atransversely disposed simultaneously adjustable coperating coupling baroperatively connected to said yoke at one end and pivotally connected atits opposite end to said frame. Y

10. In a mowing machine, a machine frame, a rising and falling couplingbar pivotally connected thereto having a transversely .disposed endextending substantially parallel to the ground, a yoke rotata-v blymounted on said end, and a simultaneously adjustable cooperatingtransversely disposed coupling bar operatively connected to said yokeand pivotally connected to said machine frame.

11. In a mowing machine, a main frame, a yoke rotatable thereon, afinger bar pivoted on said yoke, means for tilting said yoke, means formoving the ends of said yoke transversely of said main frame whentilted, and means for maintaining a constant lead on said bar during thetilting operation.

iio

12. n a mowingmachine, a main trame, a coupling frame carried thereby, ayoke rotatable thereon, a linger bar pivoted en said yoke, guard fingerscarriedl by said nger bar, a cutter bar movable in said linger bar,knives carried by said cutter bar, means lor tilting said yoke, meanslor moving the ends ol' said yoke transversely of said main traine whenthe yoke is tilted, said means maintaining a constant register el saidknives with respect to said guard lingers during the tilting operation.

13. In a mowing machine, a coupling frame, a yoke rotatable thereon, alinger bar piveted on said yoke, guard lingers carried by said lingerbar, a cutter bar movable in said linger bar, knives carried by saidcutter bar, means for tilting said yoke, and means tor maintaining aconstant lead on said bars and a constant register of said knives withrespect to said guard lingers during the tilting operation.

111. In a mowing machine, a machine trame, a rising and falling couplingbar pivotally connected thereto and having a transversely disposedportion, a yoke threaded on said portion, a coperating coupling barpivoted to said yoke and trame, and means 'for varying the eectivelength et said ceperating bar as said yoke is rotated.

15. ln a mowing machine, a trame, a coupling bar thereon, a yoke carriedon said coupling' bar, a linger bar operatively connected to said yoke,guard lingers carried by said linger bar, a cutter bar movable in saidlinger bar, knives carried by said cutter bar, means for tilting saidyoke, and operative connections between said yoke and said coupling barand said yoke and said frame whereby during the tilting or" said yoke aconstant lead is maintained on said linger bar and said cutter bar and aconstant register is maintained between said knives and said guardlingers.

16. In a mowing machine, a frame, a coupling bar thereon, a yoke carriedon said coupling bar, a linger bar operatively connected to saidyoke,'guard lingers carried by said linger bar, a cutter bar movable insaid finger bar, knives carried by said cutter bar, operativeconnections between said yoke and said coupling frame, and operativeconnections between said yoke and said machine trame, said operativeconnections being adjustable longitudinally when said linger bar andcutter bar are tilted to maintain a constant lead thereon and adjustableindependently to vary the lead of said linger bar and said cutter barand the register el said knives with respect to said guard fingers.

17. A mowing machine including a wheel frame, a coupling frame includingtwo transverse bars having their stubbleward ends pivotally connectedwith the stubbleward side of said l'rame, a rocking coupling yokecarried by one of said bars and moved longitudinally thereon when turnedin either direction, and compensating means connected with the remainingcoupling bar and operative to increase or slierten its ell'ecm tivelength when said yoke is turned in opposite directions.

18. i mowing machine including a wheel frame, an inner shoe and a lingerbar secured thereto, a main coupling bar having its stubbleward endpivotally connected with said :trame and its opposite end threaded, arocking coupling yoke including a threaded sleeve carried by thethreaded end el said coupling bar andhaving said shoe pivotallyconnected therewith, and a supplementalA coupling bar having one endpivotally connected with said yoke and its opposite end threadedoppositely to said main bar and pivetally connected with said frame.

19. i mowing machine including a wheel frame, an inner shoe, a lingerbar pivotally connected therewith, a main coupling bar having itsstubbleward end pivotally connected with said trame and its opposite endthreaded, a rocking coupling yoke including a threaded sleeve mountedupon the threaded end el said bar, an oppositely threaded sleeve memberpivotally connected with said trame, and a supplemental coupling barhaving one end threaded and received by said sleeve member and itsopposite end pivotally connected with said yoke.

20. ln a mowing machine, a frame, a crank shalt journaled thereon, acrank wheel. carried on sain shalt, a bowl partially iiiclosing saidcrank wheel, an end member movable in a vertical plane pivoted en saidbowl and cooperating therewith and inclosing said crank wheel, acoupling frame carried en said frame, a yoke carried on said couplingtrame, and a coupling rod pivotally connected at one end el said yokeand adjustably connected at its opposite .end to said vertically movableend member.

21. ln a mowing machine, a frame, an adjustable coupling frame thereon,a yoke carried on said coupling trame, a crank shalt journaled on saidtrame, a crank wheel secured to said shalt, a bowl carried on said trameand partially surrounding said crank wheel, a removable end wall l'orsaid bowl` pivoted thereto and cooperating therewith to inclose saidcrank wheel., and a coupling member operativelyconnected at itsgrassward end to said yoke and adjnstably ceniected at its stubblewardend to said end wall member.

22. A mowing machine including, in combination, a main 'frame having aforwardly extending tubular member, a crank shalt journaled in saidtubular member, a crank wheel secured to the trent end of said crankshaft, a bowl forming part of said main iframe extending in front ofsaid vcrank wheel and partially surrounding the same, a removable memberpivotally connected with said bowl and forming the front end wallthereon, a couplingframe including a yoke, and a Coupling` memberconnecting said yoke with the removable end wall of said bowl.

In testimony whereof I afliX my signature, in the presence of twowitnesses.

CHARLES PEARSON.

Witnesses:

R. W. MARTIN, RAY PAT'DISON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

